Radiography apparatus and radiography method using same

Abstract

The present inventive concept relates to a radiography apparatus and a radiography method using the same and, more particularly, to a radiography apparatus for capturing an image of an object by using radiation, and a radiography method using the same. The radiography apparatus according to an embodiment of the present inventive concept includes: a radiation emitting unit for emitting radiation to an object; a driving unit for moving the radiation emitting unit; a radiation detection unit for detecting radiation emitted from each of a plurality of imaging positions provided at each of imaging angle with respect to the object, so as to acquire a plurality of radiation images; and a plurality of radiation sources provided in the radiation emitting unit, such that, according to the movement of the radiation emitting unit, at least one thereof is arranged at one imaging position and at least one thereof is arranged at a position spaced apart from each imaging position.

1 . A radiography apparatus comprising:
 a radiation emitting unit for emitting radiation to an object;   a driving unit for moving the radiation emitting unit;   a radiation detection unit for detecting radiation emitted from each of a plurality of imaging positions provided at each of imaging angle with respect to the object, so as to acquire a plurality of radiation images; and   a plurality of radiation sources provided in the radiation emitting unit, such that, according to the movement of the radiation emitting unit, at least one thereof is arranged at one imaging position and at least one thereof is arranged at a position spaced apart from each imaging position.   
     
     
         2 . The radiography apparatus of  claim 1 , wherein the radiation sources are provided in the radiation emitting unit to have different intervals respectively from the adjacent imaging positions in one direction. 
     
     
         3 . The radiography apparatus of  claim 1 , wherein the radiation sources are provided in the radiation emitting unit such that an interval therebetween is greater than each interval between the imaging positions. 
     
     
         4 . The radiography apparatus of  claim 1 , wherein the radiation sources are sequenced in one direction, and
 the driving unit moves the radiation emitting unit along the sequenced direction of the radiation sources.   
     
     
         5 . The radiography apparatus of  claim 1 , wherein the radiation sources are integrally moved with the radiation emitting unit while maintaining the interval therebetween. 
     
     
         6 . The radiography apparatus of  claim 1 , wherein the radiation sources are sequentially activated according to the movement of the radiation emitting unit. 
     
     
         7 . The radiography apparatus of  claim 1 , wherein the radiation detection unit acquires each radiation image during the movement of the radiation emitting unit. 
     
     
         8 . The radiography apparatus of  claim 1 , wherein the driving unit changes a moving speed of the radiation emitting unit according to an interval between each radiation source and each imaging position. 
     
     
         9 . The radiography apparatus of  claim 1 , further comprising a control unit for controlling an emitting direction of each radiation source according to the movement of the radiation emitting unit. 
     
     
         10 . The radiography apparatus of  claim 9 , wherein the control unit controls the emitting direction of the radiation sources, such that the emitting direction of each radiation source is towards the same position according to the movement of the radiation emitting unit. 
     
     
         11 . The radiography apparatus of  claim 1 , wherein the radiation detection unit is provided to be rotatable according to the movement of the radiation emitting unit. 
     
     
         12 . A radiography method comprising:
 acquiring a first radiation image by activating a first radiation source arranged at one imaging position among a plurality of radiation sources provided in a radiation emitting unit;   moving the radiation emitting unit; and   acquiring a second radiation image by activating a second radiation source arranged at one imaging position among the plurality of radiation sources provided in the radiation emitting unit.   
     
     
         13 . The radiography method of  claim 12 , wherein in the moving of the radiation emitting unit, the radiation emitting unit moves in a distance shorter than each interval between the imaging positions. 
     
     
         14 . The radiography method of  claim 12 , wherein in the moving of the radiation emitting unit, a moving speed of the radiation emitting unit is changed according to an interval between each radiation source and each imaging position. 
     
     
         15 . The radiography method of  claim 12 , wherein the acquiring of the first radiation image and the acquiring of the second radiation image are performed while the radiation emitting unit moves. 
     
     
         16 . The radiography method of  claim 12 , further comprising changing an emitting direction of each radiation source, such that the emitting directions of the first radiation source and the second radiation source are towards the same position as a position before the radiation emitting unit moves. 
     
     
         17 . The radiography method of  claim 12 , further comprising the rotating of a radiation detection unit between the acquiring of the first radiation image and the acquiring of the second radiation image. 
     
     
         18 . The radiography method of  claim 12 , wherein the acquiring of the first radiation image, the moving of the radiation emitting unit, and the acquiring of the second radiation image are repeated until all radiation images are acquired at each imaging position. 
     
     
         19 . The radiography method of  claim 12 , wherein the first radiation image comprises a pre-shot image.